<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <button>接口请求</button>
</body>
<script>
    // jsonp接口请求
    function jsonp(str){
        console.log(str)
    }
</script>
<script src="http://127.0.0.1:3000/api/v1/list/add?callback=jsonp"></script>
</html>